Electrical ballast-mount.



nib/Less es 5MM www PATENTBD AUG. 21, 1906.

G. D. BNOGHS. ELECTRICAL 'BALLAST MOUNT.

APPLICATION FILED AUG. 3. 19051 In? enor:

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UNITED STATES PATENT GFFICE.

ELECTRICAL BALLAST-MOUNT.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application iiled August 3, 1905. Serial No. 272,485.

To all whom if may concern:

Be it known that I, CLAUDE D. ENooHs, a citizen of the United States,residing at La Crosse, in the county of La Crosse and State ofWisconsin, have invented a new and useful Electrical Ballast-Mount, 'ofwhich the following is a specification.

My invention relates to an electrical ballast-mount. Iron Wire or otherballast conductors used in connection with telephoneexchange apparatusrequire to be supported in a manner in which they are not easily brokenor do not fall apart by their own weight when heated.

The object of my invention is to provide means for supporting theballast-conductor under varying conditions of load.

' Further ob]ects are simplicity of construction and effectiveness inuse.

To these ends my invention consists, in a general way, of a mount orconvenl ent sh ape, such as a stem around which is formed a spiralthreadwhich receives and supports a ballast-conductor. This mount is providedwith lead-wires connected with the ballastconductor and ma be incloscdin a suitable sealed chamber, which may or may not contain an inert gas,as preferred.

` In the accompanying drawings, forming p art of this specification,Figure 1 is a side view of my invention, showing part of the bulb brokenaway. Fig. 2 is a detail view of the stem holdin the ballast-conductor,and Fig. 3 is a detai longitudinal section of the stem.

In the drawings, A represents an ordinary lamp-bulb provided with a stemB, which is formed by a thin tube C or pencil of glass projectingtherein. This thin tube or pencil of glass before being attached to thebulb is wound spirally with a thin copper wire at a stated number ofturns to the inch, care being taken that the wraps of Wire do not touch.The tube with the copper wire wound upon it is di ped in melted wax, andafter the Wax has lliardened the Wire is unwound, leaving a Spiralthread of exposed glass upon the Stem. The stem is then di ped 1nhydrouoric acid, and the exposed glhss is etched to any desired depth,leaving a s iral thread or groove thereon. The wax is t en removed andthe ballast-conductor E, made of thin iron Wire or other suitablematerial, wound in said spiral thread and attached to the leads 2 and 3,

which are connected with socket-terminals 4 and 5 on the bulb and sealedin said stem, as shown. The stem C is closed at its inner end, and apair of small lugs 6 and 7 are formed on its surface and near each ofits ends. The lead 2 is sealed in the upper lug 7 -and con nected to oneterminal of the ballast-conductor. The opposite terminal of theballast-conductor is hitched to the lug 6 and connected with the lead 3,as shown. The stem is Sealed in the bulb A in the manner of constructingincandescent lamps, and the bulb may be exhausted by attaching it to areceiver, after Which it is closed in the ordinary way. By mounting theballast-conlductor upon the stem and fastening it in a groove orotherwise said conductor can be.,`

heated to an extremely-high temperature without falling apart by its ownweight. In this manner the life and the efficiency of operation oftheballast-conductor' are increased.

It is obvious that the form in which the ballast-conductor is wound andthe shape of its supporting-stem may be changed or that it may or maynot be used in connection with an outer inclosin bulb, as desired,without departing from t ie spirit of this invention, and I do not Wishto confine myself to the exact construction or use described.

Having described my invention, what I claim as new, and desire toprotect by Letters Patent, is-

1. A mount for ballast-conductors, consisting of a stem threaded toreceive the conductor and an inclosing chamber on which said stem ismounted.

2. A ballast-mount comprising a suitable support, having aspiralxthread, and a ballast-conductor Wound around said support and onsaid thread.

3. A device of the class set forth, comprising a stem of glass or othersuitable material and a ballast-conductor wound around said stem, Saidstem provided with means for supporting said ballast-conductorthroughout its entire length.

4. A device of the class Set forth, comprising a ballast-conductor, astem having means by which said conductor is supported throughout itsentire length, an inclosing chamber in which said stem is mounted, andinleading electrical conductors connected with the terminals of saidballast-conductor.

5. A device of the class set forth, compris- IOS support having an enagement to receive and hold said conductor trou hout its length.

In testimony W'herof have signed my name to this speciiication in thepresence of two subscribing Witnesses.

CLAUDE D. ENOCHS.

Witnesses G. O. LUNDGREN, P. J. RIEGGR-

